95seMax

iTrader: (11)

i got codes 72 and 73 and they are for the left and right back of the three way catalyst,

what would make this code come up?
what steps will i need to do to help fix the problem?
do i need a new cat?

PoePoe2797

No, the left and right bank 3-way catalyst refer to your y-pipe. Might wanna get that checked

95seMax

iTrader: (11)

i just put a new budget y pipe in about 3-4 months ago
can it already be bad

is it possible air is leaking threw?

does this always happen wen u put y pipe on ?

thanks for help

Kevlo911

iTrader: (36)

0702
Diagnostic Trouble Code 0702 points to a problem with the three-way Catalytic Converter.

The Cat is one of the principal components of the emissions control system. The Engine Control Module monitors the signals from the two front Oxygen Sensors and the one rear Oxygen Sensor. The signal frequency of each sensor indicates something about the condition of that sensor. A comparison of the frequency of the front sensors with the rear sensor indicates something about the condition of the Cat.

This malfunction was detected when the ratio of the signal frequency from the right bank front Oxygen Sensor to the signal frequency of the rear Oxygen Sensor exceeded a critical threshold value. This indicates that the Cat does not have enough oxygen storage capacity. The right cylinder bank is also called the rear bank. It is cylinders 1,3,5. Possible causes of this DTC include ...
- Three-way catalyst
- Exhaust tube
- Intake air leaks
- Fuel injectors
- Spark plugs
- Ignition timing

0703
Diagnostic Trouble Code 0703 points to a problem with the three-way Catalytic Converter.

The Cat is one of the principal components of the emissions control system. The Engine Control Module monitors the signals from the two front Oxygen Sensors and the one rear Oxygen Sensor. The signal frequency of each sensor indicates something about the condition of that sensor. A comparison of the frequency of the front sensors with the rear sensor indicates something about the condition of the Cat.

This malfunction was detected when the ratio of the signal frequency from the left bank front Oxygen Sensor to the signal frequency of the rear Oxygen Sensor exceeded a critical threshold value. This indicates that the Cat does not have enough oxygen storage capacity. Possible causes include ...
- Three-way catalyst
- Exhaust tube
- Intake air leaks
- Fuel injectors
- Spark plugs
- Ignition timing

taken from hte third link onj "help my check engine light is on"

95seMax

iTrader: (11)

thank u so much for that info , great info about ecu codes, but would u know how i would go about to fix this problem

how would i fix :
-exhaust tube
-intake air leaks
-fuel injectors
-three way catalyst(does this mean my cat could be bad and i need a new one)
-ignition timing

i dont think its the spark plugs because they are farly new

if those problems suggested are the cause of this , how would i fix them , im not sure, also would this cause me to loose power in acceleration

thank u so much